Apparatus for the manufacture of pipe.



No. 825,486. PATENTED JULY 10, 1906.

' A. .M. SAUNDERS.

APPARATUS FOR THE MANUFACTURE OF PIPE. APPLICATION FILED JAN. 2-3,1904.,

INVENTOR.

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UN TTE- sTATns PATENT QFFICE.

AUGUSTUS M. SAUNDERS. OF MUKEESPORT, PENNSYLVANIA, ASSIGNOR TO NATIONALTUBE (30., OF PI'ITSBURG, PENNSYLVANIA, A CORPO- RATION OF NEIV JERSEY.

APPARATUS FOR THE MANUFACTURE OF PIPE.

Specification of Letters Patentf Patented July 10, 1906.

Application filed Tanuary 28,1904. 'Serial No. 190,328.

To all whom it may concern.-

Be it known that I, AUGUSTUS M. SAUN- DERS, a resident of McKeesport, inthe county of Allegheny and State of Pennsylvania, have invented a newand useful Improvement in Apparatus for the Manufacture of Pipe; and Ido hereby declare the following to be a full, clear, and eXactdescription thereof.

My invention relates to the manufacture of butt-weld tubing, and hasspecial reference to the manufacture of what is known as double-length.tubing, where the tube is welded in double the ordinary standard lengthand is severed during finishing into the ordinary standard length oftube. Its object is to provide for the quick handling of the weldedtube.

In Letters Patent to Peter Patterson, No. 715,854, of December 16, 1902,is described apparatus for the manufacture of such tubing, in which thewelded double-length tube is passed into a feeding-trough and cut intosections and the sections fed successively through finishing rolls,being either cut into sections before passing through the sizingrollsor, if cross-rolls are employed, before passing through the cross-rolls.In the man ufacture of the smaller sizes of this class of tubing somedifficulty has been experienced through the delay consequent to thestoppage of the blank for sawing and the subsequent feeding of the twosections along the same course to the finishing-rolls. By the presentinvention difficulties of this character are overcome and means providedfor the quick finishing of the two sections so formed.

My invention consists, generally stated, in

the combination of a receiving-trough, a lat eral feed thereto, a sawadapted to cut the tube into sections, and two sets of finishingrolls,one at each end of and in line with the receiving-trough, the rollsbeing driven in opposite directions and being adapted to draw the twosections cut from the double-length tube in opposite directions from thereceiving-trough.

It also consists in certain other improvements, as hereinafter set forthand claimed.

To enable others skilled in the art to make and use my invention, I willdescribe the same more fully, referring to the accompanying drawing,which represents in plan view apparatus embodying the invention.

The furnace 2 is of any suitable construction, preferably ofregenerative type, and is made of suitable length to receive the blanksof double length, being generally about forty to forty-five feet long.In front of the furnace in the welding apparatus 3, which may be of anysuitable construction, being shown as a swinging draw-bench pivoted atthe rear end 4, having mounted thereon the drawing-chain 5 and providedwith a bellholder 6 at its forward end, the welding-tongs 7 beingemployed to engage the blanks in the furnace and connect them to thedrawing apparatus. Located at the side of the welding apparatus is thereceiving-trough 8, formed in two sections 9 and 10, and mounted at theside of this trough is the saw 11, adapted to pass across the trough andsever the welded tube of double length into sections of the or dinarylength of standard tubes. At each end of and in line with thisreceiving-trough are sets of finishing-rolls, the sizing-rolls 12 beinglocated at the forward end of the receiving-trough section 9 and beyondthe same the cross-roll trough 13, leading to the cross-rolls 14, whichfeed to the cooling-table trough 15, which in turn feeds to thecoolingtable 16. At the opposite end of the receiving-trough and of thetrough-section 10 are the sizing-rolls 17, which feed into the crossrolltrough 18, feeding to the cross-rolls 19,

which in turn feed to the cooling-table trough 20, feeding to thecooling-table 21. In the receiving-trough sections 9 and 10 are suitablepower-driven feeding-rolls, the feedingrolls 22 in the tr0ugh-section 9feeding toward sizing-rolls 12. While the feeding-rolls 28 in thetrough-section 10 feed toward the sizing-rolls 17 the two sets offinishing-rolls are driven in opposite directions to each other, whiletheir cross-roll troughs are also provi ded with feeding-roll ers drivenin proper direction for feeding from the sizing-rolls to thecross-rolls.

In employing the apparatus above described the tube-blanks in eitherplate or strip form or bent into U shape or tubular form are fed to thewelding-furnace, preferablyinto the rear end thereof, and when makingbutt-weld tubing into final heating position, and when the edges are atwelding heat the blanks are grasped by the welding-tongs, thewelding-bell thrown over the same, the

tongs connected to the drawing apparatus, and the blank drawn throughthe bell, which is held in the bell-holder, and thereby welded intotubing. The welded tube then passes over the connecting-skids or othersuitable transfer device into the receiving-trough 8, when it isimmediately severed into two tubesections by the saw 11, and the twotubesections resting on the feed-rollers in the troughs 9 and 10 are bymeans of the same fed in opposite directions away from the saw and intothe respective finishing-rollsthat is, the forward section, resting inthe trough-section 9, is fed into the sizingrolls 12 and to thecrossroll trough 13 through the cross-rolls 14 and into thecooling-table trough 15, from which it is fed onto the cooling-table 16.At the same time the other tube-section in the trough-section 10 is fedforward from the sizing-rolls 17 into the cr ossroll trough 18 andthence from the cross-rolls 19 to the coolingtable trough 20, from whichit passes onto the cooling-table 21. The feeding-rolls in thereceiving-trough 11, as well as those in the cross-roll troughs, can bearranged to be continuously driven, so that the instant the tube issevered by the saw into two sections the respective sections will passin opposite directions away from the saw and into and through thefinishing-rolls. In this way the tubing can be very rapidly handled, anddanger of clogging the plant or of delay in finishing the tubes islargely overcome.

What I claim is 1. In apparatus for the manufacture of double-lengthtubing, the combination of a receiving-trough, a lateral feed thereto, asaw l adapted to cut the tube into sections, and two sets offinishing-rolls, one at each end of and in line with thereceiving-trough, the rolls being driven in opposite directions andadapted to draw the two sections cut from the double-length tube inopposite directions from the receiving-trough.

2. In apparatus for the manufacture of double-length tubing, thecombination of a welding-furnace, welding apparatus in front thereof, areceiving-trough at the side of the welding apparatus, a lateral feed tosaid trough, a saw adapted to cut the tube into sections, two sets offinishing-rolls one at each end of and in line with the receivingtrough,the rolls being driven in opposite directions and being adapted to drawthe two sections cut from the double-length tube in opposite directionsfrom the trough.

3. In apparatus for the manufacture of double-length tubing, thecombination of a receiving-trough, a lateral feed thereto, a saw adaptedto cut the tube into sections, two sets of finishing-rolls, one at eachend of and in line with the receiving-trough, the rolls being driven inopposite directions, and powerdriven feed-rollers in the trough drivenin opposite directions and adapted to feed the two sections in oppositedirections from the trough into the finishing-rolls.

In testimony whereof I, the said AUGUSTUS M. SAUNDERS, have hereunto setmy hand.

AUGUSTUS M. SAUNDERS.

Witnesses:

JAMES I. KAY, ROBERT C. ToTTEN.

